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The volume of a cube is 27 cm3, then its surface area isA) 36 cm2B) 54 cm2C) 64 cm2D) 82 cm2 |
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Answer» Correct option is: B) 54 cm2 The volume of a cube is \(a^3 = 27 cm^2\) = \(a^3 = 27 = 3^3\) \(\therefore\) a = 3 cm Hence, the side of the cube is 3 cm. \(\therefore\) Surface are of cube = 6 \(a^2\) = \(6 \times 3^2 = 6 \times 9 = 54 \, cm^2\) Hence, surface area of cube is 54 \(cm^2\) Correct option is: B) 54 cm2 |
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